Anya Nova Metcalfe
Anya Metcalfe is a stream ecologist specializing in aquatic food webs of the Colorado River Basin. Her research investigates the role of insect life cycles and natural history in the structure of aquatic communities on landscape scales.
Bug Flows: Improving food web health by giving bugs the weekends off
Bug Flows: Improving food web health by giving bugs the weekends off
Investigating the effects of dam releases on insect life cycles
River guides are science guides
River guides are science guides
Society for Freshwater Science 'Making Waves' podcast Episode 49
Bat foraging along the Colorado River in Grand Canyon
Bat foraging along the Colorado River in Grand Canyon
USGS scientists are contributing to our understanding of bats in National Parks
Professional Experience
2012 - present | Ecologist - US Geological Survey, Grand Canyon Monitoring and Research Center, Flagstaff, AZ
2011-2013 | Curatorial Assistant - Museum of Northern Arizona, Flagstaff, AZ
2011-2012 | Field Technician - Spring Stewardship Institute, Flagstaff, AZ
2010 | Respect the Rio interp ranger - Americorps/US Forest Service, Santa Fe National Forest, Jemez Springs, NM
Education and Certifications
2018 | M.S. Biology - Northern Arizona University
2012 | B.A. Environmental Science/Adventure Education - Prescott College
Science and Products
Angel Lichen Moth Abundance and Morphology Data, Grand Canyon, AZ, 2012 Angel Lichen Moth Abundance and Morphology Data, Grand Canyon, AZ, 2012
Two unique datasets on the abundance and morphology of the angel lichen moth (Cisthene angelus) in Grand Canyon, Arizona, USA were compiled to describe the phenology and life history of this common, but poorly known, species. The abundance data were collected from 2012 to 2013 through a collaboration with river runners in Grand Canyon National Park. These citizen scientists deployed...
Filter Total Items: 18
Insectivorous bat foraging tracks the availability of aquatic flies (Diptera) Insectivorous bat foraging tracks the availability of aquatic flies (Diptera)
Rivers and their adjacent riparian zones are model ecosystems for observing cross-ecosystem energy transfers. Aquatic insects emerging from streams, for example, are resource subsidies that support riparian consumers such as birds, spiders, lizards, and bats. We collaborated with recreational river runners in Grand Canyon, Arizona, USA, to record acoustic bat activity and sample riparian...
Authors
Anya Metcalfe, Carol Fritzinger, Theodore J. Weller, Michael Dodrill, Jeffrey Muehlbauer, Charles B. Yackulic, Brandon P. Holton, Cheyenne Maxime Szydlo, Laura E. Durning, Joel B. Sankey, Theodore Kennedy
Proceedings of the Fiscal Year 2022 Annual Reporting Meeting to the Glen Canyon Dam Adaptive Management Program Proceedings of the Fiscal Year 2022 Annual Reporting Meeting to the Glen Canyon Dam Adaptive Management Program
(Hartwell) This report is prepared primarily to account for work conducted and products delivered in FY 2022 by GCMRC and to inform the Technical Work Group of science conducted by GCMRC and its cooperators in support of the Glen Canyon Dam Adaptive Management Program (GCDAMP). It includes a summary of accomplishments, modifications to work plans, results, and recommendations related to...
Authors
David J. Topping, Paul E. Grams, Emily C. Palmquist, Joel B. Sankey, Helen C. Fairley, Bridget Deemer, Charles B. Yackulic, Theodore Kennedy, Anya Metcalfe, Maria C. Dzul, David Ward, Mariah Aurelia Giardina, Lucas Bair, Thomas M. Gushue, Caitlin M. Andrews, Ronald E. Griffiths, David J. Dean, Keith Kohl, Michael J Moran, Nicholas Voichick, Thomas A. Sabol, Laura A. Tennant, Kimberly Dibble, Michael C. Runge
Taxonomic identity, biodiversity, and antecedent disturbances shape the dimensional stability of stream invertebrates Taxonomic identity, biodiversity, and antecedent disturbances shape the dimensional stability of stream invertebrates
The “dimensional stability” approach measures different components of ecological stability to investigate how they are related. Yet, most empirical work has used small-scale and short-term experimental manipulations. Here, we apply this framework to a long-term observational dataset of stream macroinvertebrates sampled between the winter flooding and summer monsoon seasons. We test...
Authors
Daniel C Allen, Brian A Gill, Anya Metcalfe, Sophia M Bonjour, Scott Starr, Junna Wang, Diana Valentin, Nancy B. Grimm
The Grand Caddis hatch of JASM 2022: Trichoptera natural history observations at the Joint Aquatic Sciences Meeting in Grand Rapids, Michigan (USA) The Grand Caddis hatch of JASM 2022: Trichoptera natural history observations at the Joint Aquatic Sciences Meeting in Grand Rapids, Michigan (USA)
In a stroke of good luck for aquatic scientists and insect enthusiasts, the May 2022 Joint Aquatic Sciences Meeting (JASM) in Grand Rapids, Michigan coincided with a spectacular hatch of hydropsychid caddisflies. To estimate density, we enumerated caddisflies on 12 polarized window panels on the western face of the DeVos Place, which faced the Grand River. We found an average of 57.8...
Authors
Anya Metcalfe, Angelika L. Kurthen, Jared Freedman, Alexander B. Orfinger
Little bugs, big data, and Colorado River adaptive management: Preliminary findings from the ongoing bug flow experiment at Glen Canyon Dam Little bugs, big data, and Colorado River adaptive management: Preliminary findings from the ongoing bug flow experiment at Glen Canyon Dam
The undammed Colorado River in Grand Canyon was characterized by spring snow-melt floods that sometimes exceeded 100,000 cubic feet per second (cfs). These were followed by occasional flash floods during summer monsoons, then by low flows from fall through early spring (Figure 1; Topping and others, 2003). This seasonally variable flow regime carried huge loads of sediment and was an...
Authors
Theodore Kennedy, Anya Metcalfe, Bridget Deemer, Morgan Ford, Cheyenne Maxime Szydlo, Charles B. Yackulic, Jeffrey Muehlbauer
Applied citizen science in freshwater research Applied citizen science in freshwater research
Worldwide, scientists are increasingly collaborating with the general public. Citizen science methods are readily applicable to freshwater research, monitoring, and education. In addition to providing cost-effective data on spatial and temporal scales that are otherwise unattainable, citizen science provides unique opportunities for engagement with local communities and stakeholders in...
Authors
Anya N. Metcalfe, Theodore A. Kennedy, Gabriella A. Mendez, Jeffrey D. Muehlbauer
Non-USGS Publications**
Nathan, L., Mamoozadeh, N., Tumas, H., Gunselman, S., Klass, K., Metcalfe, A., Edge, C., Waits, L., Spruell, P., Lowery, E. & Connor, E. 2019. A spatially-explicit, individual-based demogenetic simulation framework for evaluating hybridization dynamics. Ecological Modelling 401: 40-51.
Eitzel, M., Cappadonna, J., Santos-Lang, C., Duerr, R., West, S., Virapongse, A., Kyba, C., Bowser, A., Cooper, C., Sforzi, A., Metcalfe, A., Harris, E., Thiel, M., Haklay, M., Ponciano, L., Roche, J., Ceccaroni, L., Shilling, F., Dörler, D., Heigl, F., Kiessling, T., Davis, B., & Jiang, Q. 2017. Citizen science terminology matters: Exploring key terms. Citizen Science: Theory and Practice 2: 1-20. DOI: 10.5334/cstp.96.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Angel Lichen Moth Abundance and Morphology Data, Grand Canyon, AZ, 2012 Angel Lichen Moth Abundance and Morphology Data, Grand Canyon, AZ, 2012
Two unique datasets on the abundance and morphology of the angel lichen moth (Cisthene angelus) in Grand Canyon, Arizona, USA were compiled to describe the phenology and life history of this common, but poorly known, species. The abundance data were collected from 2012 to 2013 through a collaboration with river runners in Grand Canyon National Park. These citizen scientists deployed...
Filter Total Items: 18
Insectivorous bat foraging tracks the availability of aquatic flies (Diptera) Insectivorous bat foraging tracks the availability of aquatic flies (Diptera)
Rivers and their adjacent riparian zones are model ecosystems for observing cross-ecosystem energy transfers. Aquatic insects emerging from streams, for example, are resource subsidies that support riparian consumers such as birds, spiders, lizards, and bats. We collaborated with recreational river runners in Grand Canyon, Arizona, USA, to record acoustic bat activity and sample riparian...
Authors
Anya Metcalfe, Carol Fritzinger, Theodore J. Weller, Michael Dodrill, Jeffrey Muehlbauer, Charles B. Yackulic, Brandon P. Holton, Cheyenne Maxime Szydlo, Laura E. Durning, Joel B. Sankey, Theodore Kennedy
Proceedings of the Fiscal Year 2022 Annual Reporting Meeting to the Glen Canyon Dam Adaptive Management Program Proceedings of the Fiscal Year 2022 Annual Reporting Meeting to the Glen Canyon Dam Adaptive Management Program
(Hartwell) This report is prepared primarily to account for work conducted and products delivered in FY 2022 by GCMRC and to inform the Technical Work Group of science conducted by GCMRC and its cooperators in support of the Glen Canyon Dam Adaptive Management Program (GCDAMP). It includes a summary of accomplishments, modifications to work plans, results, and recommendations related to...
Authors
David J. Topping, Paul E. Grams, Emily C. Palmquist, Joel B. Sankey, Helen C. Fairley, Bridget Deemer, Charles B. Yackulic, Theodore Kennedy, Anya Metcalfe, Maria C. Dzul, David Ward, Mariah Aurelia Giardina, Lucas Bair, Thomas M. Gushue, Caitlin M. Andrews, Ronald E. Griffiths, David J. Dean, Keith Kohl, Michael J Moran, Nicholas Voichick, Thomas A. Sabol, Laura A. Tennant, Kimberly Dibble, Michael C. Runge
Taxonomic identity, biodiversity, and antecedent disturbances shape the dimensional stability of stream invertebrates Taxonomic identity, biodiversity, and antecedent disturbances shape the dimensional stability of stream invertebrates
The “dimensional stability” approach measures different components of ecological stability to investigate how they are related. Yet, most empirical work has used small-scale and short-term experimental manipulations. Here, we apply this framework to a long-term observational dataset of stream macroinvertebrates sampled between the winter flooding and summer monsoon seasons. We test...
Authors
Daniel C Allen, Brian A Gill, Anya Metcalfe, Sophia M Bonjour, Scott Starr, Junna Wang, Diana Valentin, Nancy B. Grimm
The Grand Caddis hatch of JASM 2022: Trichoptera natural history observations at the Joint Aquatic Sciences Meeting in Grand Rapids, Michigan (USA) The Grand Caddis hatch of JASM 2022: Trichoptera natural history observations at the Joint Aquatic Sciences Meeting in Grand Rapids, Michigan (USA)
In a stroke of good luck for aquatic scientists and insect enthusiasts, the May 2022 Joint Aquatic Sciences Meeting (JASM) in Grand Rapids, Michigan coincided with a spectacular hatch of hydropsychid caddisflies. To estimate density, we enumerated caddisflies on 12 polarized window panels on the western face of the DeVos Place, which faced the Grand River. We found an average of 57.8...
Authors
Anya Metcalfe, Angelika L. Kurthen, Jared Freedman, Alexander B. Orfinger
Little bugs, big data, and Colorado River adaptive management: Preliminary findings from the ongoing bug flow experiment at Glen Canyon Dam Little bugs, big data, and Colorado River adaptive management: Preliminary findings from the ongoing bug flow experiment at Glen Canyon Dam
The undammed Colorado River in Grand Canyon was characterized by spring snow-melt floods that sometimes exceeded 100,000 cubic feet per second (cfs). These were followed by occasional flash floods during summer monsoons, then by low flows from fall through early spring (Figure 1; Topping and others, 2003). This seasonally variable flow regime carried huge loads of sediment and was an...
Authors
Theodore Kennedy, Anya Metcalfe, Bridget Deemer, Morgan Ford, Cheyenne Maxime Szydlo, Charles B. Yackulic, Jeffrey Muehlbauer
Applied citizen science in freshwater research Applied citizen science in freshwater research
Worldwide, scientists are increasingly collaborating with the general public. Citizen science methods are readily applicable to freshwater research, monitoring, and education. In addition to providing cost-effective data on spatial and temporal scales that are otherwise unattainable, citizen science provides unique opportunities for engagement with local communities and stakeholders in...
Authors
Anya N. Metcalfe, Theodore A. Kennedy, Gabriella A. Mendez, Jeffrey D. Muehlbauer
Non-USGS Publications**
Nathan, L., Mamoozadeh, N., Tumas, H., Gunselman, S., Klass, K., Metcalfe, A., Edge, C., Waits, L., Spruell, P., Lowery, E. & Connor, E. 2019. A spatially-explicit, individual-based demogenetic simulation framework for evaluating hybridization dynamics. Ecological Modelling 401: 40-51.
Eitzel, M., Cappadonna, J., Santos-Lang, C., Duerr, R., West, S., Virapongse, A., Kyba, C., Bowser, A., Cooper, C., Sforzi, A., Metcalfe, A., Harris, E., Thiel, M., Haklay, M., Ponciano, L., Roche, J., Ceccaroni, L., Shilling, F., Dörler, D., Heigl, F., Kiessling, T., Davis, B., & Jiang, Q. 2017. Citizen science terminology matters: Exploring key terms. Citizen Science: Theory and Practice 2: 1-20. DOI: 10.5334/cstp.96.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.